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Hi all,
I don't see this being mentioned anywhere in the How-to or this forum. It appears that when booting off the Mfstools CD, the IDE drives are not enabled to operate in 32-bit I/O and DMA default. In other words, the copy is done in 16-bit PIO mode.
The speed of the copying can be greatly increased by enabling 32-bit I/O and DMA on the IDE drives, by issuing thecommand: hdparm -c1 -d1 /dev/hdx, for each drive.
I copied an 80GB HDD (69GB of uncompressed backup size) to a 160GB HDD, in about half an hour this way.
Hope this helps.
I don't see this being mentioned anywhere in the How-to or this forum. It appears that when booting off the Mfstools CD, the IDE drives are not enabled to operate in 32-bit I/O and DMA default. In other words, the copy is done in 16-bit PIO mode.
The speed of the copying can be greatly increased by enabling 32-bit I/O and DMA on the IDE drives, by issuing thecommand: hdparm -c1 -d1 /dev/hdx, for each drive.
I copied an 80GB HDD (69GB of uncompressed backup size) to a 160GB HDD, in about half an hour this way.
Hope this helps.
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